Expression Language Operators JSP

by Geethalakshmi 2010-11-11 17:21:29

Expression Language Operators JSP


The JSP expression language provides the following operators:

* Arithmetic: +, - (binary), *, / and div, % and mod, - (unary)
* Logical: and, &&, or, ||, not, !
* Relational: ==, eq, !=, ne, <, lt, >, gt, <=, ge, >=, le. Comparisons can be made against other values, or against boolean, string, integer, or floating point literals.
* Empty: The empty operator is a prefix operation that can be used to determine whether a value is null or empty.
* Conditional: A ? B : C. Evaluate B or C, depending on the result of the evaluation of A.

The precedence of operators highest to lowest, left to right is as follows:

* [] .
* () - Used to change the precedence of operators.
* - (unary) not ! empty
* * / div % mod
* + - (binary)
* < > <= >= lt gt le ge
* == != eq ne
* && and
* || or
* ? :

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